Devon knits at a constant rate. In 1 1/4 Devon adds 10 in to a scarf.

Twelve less than a number is at most 20

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

What is the slope of any line parallel to the line 8x+9y=3 in the standard (x,y) coordinate plane?